Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D47/00—Closures with filling and discharging, or with discharging, devices
  • B65D47/04—Closures with discharging devices other than pumps
  • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D90/00—Component parts, details or accessories for large containers
  • B65D90/12—Supports
  • B65D90/20—Frames or nets, e.g. for flexible containers
  • B65D90/205—Frames or nets, e.g. for flexible containers for flexible containers, i.e. the flexible container being permanently connected to the frame
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
  • B31B2150/002—Flexible containers made from sheets or blanks, e.g. from flattened tubes by joining superimposed sheets, e.g. with separate bottom sheets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31B2160/00—Shape of flexible containers
  • B31B2160/30—Shape of flexible containers pointed or tapered

Definitions

• the invention relates to a method of manufacturing a flexible container of large capacity, the flexible container obtained by the process and a corresponding packaging. It has applications in the field of packaging.
• plastics for example woven polymer such as polypropylene, or possibly of composite material, for example laminate or sandwich of plastic sheets, and have capacities ranging from 100 L to more than 600 L and can withstand load ranging from a few tens of kilograms to more than 500 kg.
• the packaging thus produced and consisting of the container and its internal protective envelope, is disposable after use, which ensures its perfect cleanliness since it is used only once. This feature avoids the risk of contamination, unlike rigid reusable containers that should be washed, sanitized, identified.
• the flexibility of the package it is possible to store it folded when empty, which reduces the bulk. As a result, the unit cost of use is much lower in the end and eliminates the risk of mixing between successive contents.
• the different parts of the container are obtained by cutting a sheet of material and these different parts are then assembled together. This assembly can be done by sewing but it is also possible to implement, combined or not with the seam, welding and / or bonding to obtain an improved seal.
• the internal protective envelope commonly known as “liner”
• liner provides sealing and must be one hundred percent waterproof.
• its function is to protect the contents of the flexible container from its environment (moisture, odor, light, gas).
• the internal protective envelope is made of a polymer material, such as polyethylene, for example. It can also be made from more noble materials such as laminated complexes based on aluminum, polyamide or technical plastics giving it more specific properties.
• the materials used and the methods of manufacturing the internal protection casings must meet the standards of the pharmaceutical industry, and in particular the constraints concerning cleanliness, the absence of pollution and the absence of germs.
• the known high-capacity flexible packages have a parallelepipedal shape with a square or rectangular section and they are intended to be inserted into a metal frame and supported by it.
• the application FR10 / 51406 (FR2 956 834) explains a method of manufacturing a flexible package of large capacity of rectangular section.
• a flexible package is also presented in US2008 / 283524A1.
• the present invention provides a method of making a flexible container that is simplified and provides a flexible container of a particular shape.
• the invention firstly relates to a method of manufacturing a flexible container of large capacity comprising a body with, downwards, a bottom comprising a discharge chute and, upwards, a hat, the hat having a filler neck.
• the method comprises:
• each of the main panels having partly a square or rectangular shape with four sides, two side sides, one side of the top and one bottom side, shape whose bottom side is extended by a substantially trapezoidal extension whose downward apex is extended by a tab, the extension and the tab being intended to form the bottom and the discharge chute of the container,
• each of the cap panels having a substantially trapezoidal bottom-base shape and whose upward apex is extended by a tongue, the tongue being intended to form the extended fill channel upwards,
• each hat panel being assembled to the top of the corresponding main panel
• the main panels being assembled at least two to two along their lateral sides and their corresponding extensions, the lateral sides in correspondence of the hat panels being assembled in pairs between them; the top ends of the tabs being left free to form an upper filler neck opening which is substantially square.
• the present invention also relates to the following features which may be considered individually or in all their technically possible combinations and each bring specific advantages:
• the substantially trapezoidal shaped portion of the hat panel is configured to form a substantially flat or horizontal portion of the container cap
• the substantially trapezoidal portion of the hat panel is configured to form a substantially upwardly inclined portion and the center of the container cap
• the substantially trapezoidal extension of the main panel is configured to form a substantially flat or horizontal portion of the bottom of the container
• the substantially trapezoidal extension of the main panel is configured to form a substantially downwardly inclined portion and the center of the bottom of the container
• main panels and the hat panels are cut individually and a main panel is then assembled and secured to a hat panel to form one of the four sides of the container, four sides of the container being then assembled and joined together to form the hat , the body and the bottom of the container,
• main panels are cut in pairs, each pair comprising two main panels remaining contiguous to their common lateral body edges, and the two pairs then being assembled together to form the body and the bottom of the container,
• the main panels are divided into two forms, a first form comprising three main panels remaining joined two by two by their common lateral body edges, and a second shape corresponding to an individual main panel, and the two forms then being assembled together. to form the body and the bottom of the container,
• the main panels are cut into a single form comprising four main panels remaining joined two by two by their common lateral body edges, the two opposite end lateral edges of the shape then being assembled together to form the body and the bottom of the container , the hat panels are cut individually and are then assembled and joined together to form the cap of the container,
• the hat panels are cut in pairs, each pair comprising two hat panels remaining contiguous to a portion of their common lateral edges, and the two pairs then being assembled together to form the cap of the container,
• the hat panels are cut in two forms, a first form comprising three hat panels remaining joined two by two by portions of their common lateral edges, and a second shape corresponding to an individual hat panel, and the two forms being then assembled together to form the container cap,
• the hat panels are cut into a single form comprising four hat panels remaining joined together in pairs by portions of their common lateral edges, the two opposite end lateral edges of the shape being assembled together to form the cap of the container,
• the hat panel (s), individual or not, and the main panel (s), individual or not, are cut in such a way as to form separate hat or main panels in front of which to be assembled together,
• the hat panel (s), individual or not, and the main panel (s) (s), individual or not, are cut to form composite panels having a cap-like portion and a main type portion remaining contiguous by at least their respective lower / base and top edges,
• the tabs extending the extensions of the main panels are also assembled between said main panels in order to form a closed bottom
• the tabs extending the extensions of the main panels are further intended to form a discharge chute, said tabs being assembled accordingly, the ends of the bottom of the tabs being left free to form a lower chute opening which is substantially square ,
• the fold is at a determined distance from the top side of the main panel
• the fold is at the edge of the top side of the main panel
• the fold is split transversely in several parts by openings pierced in the main panel in order to form a determined number of loops by main panel,
• the belt forming a continuous ring results from the sewing together of ends of segments of straps
• the belt forming a continuous ring results from sewing together the two ends of a strap, the fold is pierced with openings intended to allow the passage of pins projecting from the upper edge of a metal frame intended to support the container,
• the fixation of the fold and / or the fastening of the panels correspond to one or more of the following operations: sewing, welding, gluing,
• thermo-welding is performed by thermo-welding
• the cutting is carried out using ultrasound or by means of a hot blade
• the flexible material is a sheet of a polymer
• the polymer sheet is a woven
• the polymer is coated polypropylene
• the grammage of the hat panel is identical to the weight of the hat panel
• the weight of the hat panel is different from the weight of the hat panel
• the basis weight of the hat panel is less than the weight of the hat panel
• the weight of the hat panel is between 65 and 75 g / m 2 ,
• the grammage of the main panel is between 90 and 120g / m 2 .
• the invention also relates to a flexible container of large capacity obtained by the method described, said flexible container having a body with a bottom, a bottom and, upwardly, a cap, the cap having a filler neck having an opening upper trough which is substantially square, the container having passers-type attachment means corresponding to folds formed and fixed in the walls of the body of said flexible container.
• the invention also relates to a package which consists externally of a flexible container of large capacity as described and, internally, a sealed internal protective envelope having an opening in relation to the filler neck of the cap.
• the package is disposed in a metal frame and is held extended in said metal frame by passers made in main panels forming the body of the flexible container and a belt forming a continuous ring around the container and which is passed through the passersby.
• FIG. 1 represents an exploded view of a flexible container according to the invention
• FIG. 2 represents a flexible container deployed and held by a metal frame
• Figure 3 shows the cutting of a sheet of flexible material to form a hat panel
• Figure 4 shows the cutting of a sheet of flexible material to form a main panel
• Figures 5, 6 and 7 show the steps of preparing and securing the main panel and hat panel
• Figures 8a and 8b show the assembly technique of the panels to form the container
• Figure 9 shows a flexible container obtained with a belt held in his passersby.
• the flexible container of large capacity of the invention is intended to be inserted into a metal frame which serves as a supporting structure, the flexible container being held there deployed by means of its fastening means / holding types of loops.
• FIG. 1 four main panels 1 and four hat panels 2 were cut individually in a sheet of a flexible material. These panels are arranged so as to give an exploded view of the flexible container of the invention.
• Each main panel 1 has a portion 3 of square or rectangular shape with four sides, two lateral sides 7, one side of the top 8 and one side of the virtual bottom because the bottom side is extended by a substantially trapezoidal extension 4 whose vertex is extended by a tab 5, the extension and the tab being intended to form the bottom of the container.
• Part 3 of square or rectangular shape is intended to form a side face of the container.
• a closed bottom or, preferably, a bottom with a chute dump depending on how the tabs are secured together, one can obtain a closed bottom or, preferably, a bottom with a chute dump.
• the upper end of the portion 3 of the main panel has been cut 16 and folded on itself to form folds 6 sewn to hold them, corresponding to loops in which a belt (not shown in Figure 1) is passed.
• Each cap panel 2 has a portion 9 of substantially trapezoidal bottom-base shape and the top apex is extended by a tongue 10, the tongue being intended to form an upwardly extended filler neck.
• each cap panel 2 is intended to be secured, preferably by stitching, to the upper side 8 of the main panel 1.
• the adjacent sides in correspondence of the main panels, on the one hand, and the hat panels, on the other hand, are intended to be secured together, preferably by stitching.
• hat panel 2 is obtained by cutting a sheet of flexible material into the form indicated, leaving material drops.
• main panel 1 as shown in Figure 4, in which cutouts 16 are made to form openings between passers as will be seen later.
• the sheet of the material used is in the form of a roll which is unwound. It is understood that it is possible to implement cutting optimization means to reduce the surface of the falls, in particular by using large sheets on which the panels are judiciously arranged, including staggered, to reduce falls. However, if the material of the sheet is oriented, for example if there is a direction for which the tensile strength is maximum, it will be taken into account in the distribution of the elements to be cut. In addition, certain ancillary operations may be provided in the case of certain materials such as, for example, the possible fusion / hot cautery of the edge of each cut piece in the case of a woven material.
• the cutting of the sheet of material can be achieved by using ultrasound, including mobile ultrasonic knives, to avoid a release of fumes and the use of extractor hoods.
• the cutting can be performed by a hot blade technique (350 ° C).
• Other known cutting techniques such as water jet, laser or mechanical, can also be used. Note that in the case of cutting by hot blade or ultrasound, the fusion / cauterization of the edge is performed during cutting which also allows to remove pollution by detachment of fibers in the case where the sheet of material is a woven .
• the sheet of material is a coated polypropylene fabric delivered in a coil and this fabric is cut on special machines.
• the basis weight of the hat panel is between 65 and 75 g / m 2 and the basis weight of the main panel is between 90 and 120 g / m 2 , which value can be adapted to the expected load. Indeed, the mechanical stresses on the different panels are different.
• the main panels support the main load and ensure attachment to the support frame, the hat panels are a simple protection of the contents including the inner envelope and they allow the closure of the package after filling.
• the grammage is the same for both types of panels, which makes it possible to use only one type of sheet of material and to optimize the cutting, in particular by producing mixed hat + body + bottom panels.
• FIGs 5, 6 and 7 can be seen the steps of preparation and joining the main panel 1 to the hat panel 2 corresponding.
• the preparation corresponds to cutouts 16 and a folding of the main panel to its top edge 8 and immobilization of the fold obtained by sewing to form the loops 6.
• the fastening corresponds to the connection of the top edge 8 of the main panel 1 with the base, or bottom edge, of the hat panel 2 and their seam. An element corresponding to one of the four faces / sides of the flexible container is thus obtained.
• a composite panel is produced comprising the main panel and the hat panel, ie the two panels in question of the sheet are not separated along the top edge (main panel) and the base (hat panel) when cutting the sheet.
• a bellows assembly is made as shown in perspective in FIG. 8a and in section in FIG. 8b.
• the side edges in correspondence of the panels of the elements are sewn in pairs.
• the seams are all along the side edges of the panels.
• the ends of the top of the tongues 10 are left free in order to form the upper opening of the filler neck 1 1 which is substantially square.
• the ends of the bottom of the legs 5 are left free to form a lower chute opening 17 which is substantially square. It is during this final assembly step that the internal protective envelope is installed in order to obtain a sealed package. These operations can be done flat.
• a belt 13 is passed through the loops 6 as shown in Figure 9.
• This belt is preferably made by sewing one or more segments of straps together to form a belt which is a continuous ring. It may be noted that with the method of the invention, it is not necessary to add by welding or gluing the fastening tabs on the flexible container because the fastening means in the form of loops are simply obtained by folding and fixing / immobilization of a portion of the material of the flexible container.
• the joining of the panels together is preferably done by sewing but other techniques are possible such as welding or gluing that can possibly combine.
• the welds, in the case where they are made, are made by thermo-welding.
• one can associate the seam and welding to improve the seal preferably a strip of material covering at least one side of the seam being welded on the latter so that at least one of the faces of the seam is isolated from the environment.
• the strip of material is preferably an edge fold of one of the sewn panels, the seam having been made at a distance from this edge. It can be expected that the two stitched panels each have such a strip folded, which allows sealing on both sides of the seam. Alternatively, a band of a specific material attached is welded to the seam.
• the exemplary embodiment of the invention which has just been described has used during manufacture four identical individual main panels and four identical individual cap panels which have been joined together. It is understood that it is also possible to make a flexible container using panels that are one piece forming for example two main panels or three main panels. For this purpose, instead of cutting individual panels in the sheet of a flexible material, is left contiguous two or three main panels. It is understood that this technique is essentially useful for the main panels which have relatively long correspondence sides.
• This internal protection envelope is obtained by extrusion blow molding of polyethylene whose final shape is given by cutting and hot welding.
• This inner protection envelope which includes bibs integrates with the container during the final assembly phase of the panels so that the bibs are sandwiched in the seams of the lateral sides of the panels, essentially main panels.
• the packaging can be folded flat along its natural edges.
• the volume occupied by this empty packaging is then relatively small compared to other types of known packaging.
• the present invention is not limited to the particular embodiments which have just been described, but extends to all variants and equivalents in accordance with its spirit.
• the method of making the container can be used for the manufacture of the internal protective envelope which is installed in the container, except that in this case it is not necessary to make the folds of the containers.
• main panels and in this case of manufacture of the internal protective envelope it is preferably implemented welding the panels together to obtain a seal.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Packages (AREA)
• Bag Frames (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=47263468

Family Applications (1)

Country Status (9)

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Citations (3)

Family Cites Families (12)

• 2011
  • 2011-11-07 FR FR1160103A patent/FR2982252B1/fr not_active Expired - Fee Related
• 2012
  • 2012-11-05 ES ES12794434.6T patent/ES2558334T3/es active Active
  • 2012-11-05 CN CN201280054208.0A patent/CN103987634A/zh active Pending
  • 2012-11-05 BR BR112014010903-6A patent/BR112014010903B1/pt active IP Right Grant
  • 2012-11-05 US US14/356,239 patent/US9694952B2/en active Active
  • 2012-11-05 CA CA2854881A patent/CA2854881C/fr active Active
  • 2012-11-05 EP EP12794434.6A patent/EP2776342B1/fr active Active
  • 2012-11-05 WO PCT/FR2012/052548 patent/WO2013068680A1/fr active Application Filing
  • 2012-11-05 HU HUE12794434A patent/HUE026563T2/en unknown

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